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| 1 | +#!/usr/bin/env python3 |
| 2 | + |
| 3 | +# Written by Claude.ai |
| 4 | + |
| 5 | +import os |
| 6 | +import sys |
| 7 | +import glob |
| 8 | +import hashlib |
| 9 | +import subprocess |
| 10 | +import argparse |
| 11 | +import tempfile |
| 12 | +from pathlib import Path |
| 13 | +from typing import Tuple |
| 14 | + |
| 15 | + |
| 16 | +def main() -> None: |
| 17 | + """Main function to validate GitHub artifacts.""" |
| 18 | + args = parse_args() |
| 19 | + |
| 20 | + # Create and change to a clean temporary directory |
| 21 | + with tempfile.TemporaryDirectory() as td: |
| 22 | + os.chdir(td) |
| 23 | + |
| 24 | + download_artifact(args.artifact_id, args.repo, args.github_token) |
| 25 | + extract_artifact() |
| 26 | + |
| 27 | + archive_file, checksum_file = find_archive_files( |
| 28 | + args.executable_name, args.target |
| 29 | + ) |
| 30 | + verify_checksum(checksum_file, archive_file) |
| 31 | + extract_archive(archive_file) |
| 32 | + verify_archive_contents(args.executable_name, args.changes_file) |
| 33 | + |
| 34 | + print("All validation checks passed successfully") |
| 35 | + |
| 36 | + |
| 37 | +def parse_args() -> argparse.Namespace: |
| 38 | + """Parse and return command line arguments.""" |
| 39 | + parser = argparse.ArgumentParser() |
| 40 | + parser.add_argument("--artifact-id", required=True) |
| 41 | + parser.add_argument("--executable-name", required=True) |
| 42 | + parser.add_argument("--github-token", required=True) |
| 43 | + parser.add_argument("--repo", required=True) |
| 44 | + parser.add_argument("--target", required=True) |
| 45 | + parser.add_argument("--no-changes-file", dest="changes_file", action="store_false") |
| 46 | + parser.set_defaults(changes_file=True) |
| 47 | + |
| 48 | + return parser.parse_args() |
| 49 | + |
| 50 | + |
| 51 | +def download_artifact(artifact_id: str, repo: str, github_token: str) -> None: |
| 52 | + """Download artifact from GitHub.""" |
| 53 | + subprocess.run( |
| 54 | + [ |
| 55 | + "curl", |
| 56 | + "-L", |
| 57 | + "-H", |
| 58 | + "Accept: application/vnd.github+json", |
| 59 | + "-H", |
| 60 | + f"Authorization: Bearer {github_token}", |
| 61 | + "-o", |
| 62 | + "artifact.zip", |
| 63 | + f"https://api.github.com/repos/{repo}/actions/artifacts/{artifact_id}/zip", |
| 64 | + ], |
| 65 | + check=True, |
| 66 | + ) |
| 67 | + |
| 68 | + |
| 69 | +def extract_artifact() -> None: |
| 70 | + """Extract the downloaded artifact zip file.""" |
| 71 | + subprocess.run(["unzip", "artifact.zip"], check=True) |
| 72 | + |
| 73 | + |
| 74 | +def find_archive_files(executable_name: str, target: str) -> Tuple[str, str]: |
| 75 | + """Find and return the archive and checksum files.""" |
| 76 | + is_windows = "windows" in target.lower() |
| 77 | + glob_pattern = ( |
| 78 | + f"{executable_name}*.zip*" if is_windows else f"{executable_name}*.tar.gz*" |
| 79 | + ) |
| 80 | + files = glob.glob(glob_pattern) |
| 81 | + |
| 82 | + if len(files) != 2: |
| 83 | + sys.exit(f"Expected 2 files in artifact, found {len(files)}: {files}") |
| 84 | + |
| 85 | + archive_file = next((f for f in files if "sha256" not in f), None) |
| 86 | + checksum_file = next((f for f in files if "sha256" in f), None) |
| 87 | + |
| 88 | + if not archive_file: |
| 89 | + sys.exit("Archive file not found in artifact") |
| 90 | + if not checksum_file: |
| 91 | + sys.exit("Checksum file not found in artifact") |
| 92 | + |
| 93 | + return archive_file, checksum_file |
| 94 | + |
| 95 | + |
| 96 | +def verify_checksum(checksum_file: str, archive_file: str) -> None: |
| 97 | + """Verify the checksum of the archive file.""" |
| 98 | + if not Path(checksum_file).is_file(): |
| 99 | + return |
| 100 | + |
| 101 | + checksum, filename = parse_checksum_file(checksum_file) |
| 102 | + |
| 103 | + if filename != archive_file: |
| 104 | + sys.exit( |
| 105 | + f"Checksum filename '{filename}' doesn't match archive '{archive_file}'" |
| 106 | + ) |
| 107 | + |
| 108 | + calculated_checksum = calculate_file_sha256(filename) |
| 109 | + if checksum != calculated_checksum: |
| 110 | + sys.exit("Checksum verification failed") |
| 111 | + |
| 112 | + |
| 113 | +def parse_checksum_file(checksum_file: str) -> Tuple[str, str]: |
| 114 | + """Parse the checksum file and return the checksum and filename.""" |
| 115 | + with open(checksum_file) as f: |
| 116 | + checksum_contents = f.read().strip() |
| 117 | + |
| 118 | + try: |
| 119 | + checksum, filename = checksum_contents.split(None, 1) |
| 120 | + filename = filename.strip("* ") |
| 121 | + return checksum, filename |
| 122 | + except ValueError: |
| 123 | + sys.exit(f"Invalid checksum file format: {checksum_contents}") |
| 124 | + |
| 125 | + |
| 126 | +def calculate_file_sha256(filename: str) -> str: |
| 127 | + """Calculate SHA256 hash of a file.""" |
| 128 | + sha256 = hashlib.sha256() |
| 129 | + with open(filename, "rb") as f: |
| 130 | + for chunk in iter(lambda: f.read(8192), b""): |
| 131 | + sha256.update(chunk) |
| 132 | + return sha256.hexdigest() |
| 133 | + |
| 134 | + |
| 135 | +def extract_archive(archive_file: str) -> None: |
| 136 | + """Extract the archive file.""" |
| 137 | + if not Path(archive_file).is_file(): |
| 138 | + return |
| 139 | + |
| 140 | + if archive_file.endswith(".zip"): |
| 141 | + subprocess.run(["unzip", archive_file], check=True) |
| 142 | + else: |
| 143 | + subprocess.run(["tar", "xzf", archive_file], check=True) |
| 144 | + |
| 145 | + |
| 146 | +def verify_archive_contents(executable_name: str, include_changes_file: bool) -> None: |
| 147 | + """Verify the contents of the extracted archive.""" |
| 148 | + expected_files = ["README.md"] |
| 149 | + if include_changes_file: |
| 150 | + expected_files.append("Changes.md") |
| 151 | + expected_files.append(executable_name) |
| 152 | + |
| 153 | + for file in expected_files: |
| 154 | + if not Path(file).is_file(): |
| 155 | + sys.exit(f"Expected file '{file}' not found in archive") |
| 156 | + |
| 157 | + # Check executable permissions |
| 158 | + exec_path = Path(executable_name) |
| 159 | + if not os.access(exec_path, os.X_OK): |
| 160 | + sys.exit(f"'{executable_name}' is not executable") |
| 161 | + |
| 162 | + |
| 163 | +if __name__ == "__main__": |
| 164 | + main() |
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